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Showing 1 to 13 of 13 for “"Total spin"”.
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Topics in the Theory of Bose -Einstein Condensates With a Spin Degree of Freedom
… of condensates, which are usually referred to as spinor condensates, exhibit several phenomena that are qualitatively different from scalar (i.e. spinless) condensates. We analyze the ground state of a condensate with the constraint of maintaining a constant value of the total spin, and we find a …
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Magnetic susceptibility and knight shift measurements in aluminum-rare earth alloys
… Yb, and Lu, and that the coupling between the total spin and The total orbital angular momentum of f electrons is dominant in determining the size of localized moments on solutes. The maximum magnitude of localized moments observed was over 10ub which is impossible without a contribution to the …
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Applications of Stein's method and large deviations principle's in mean-field O(N) models
… large deviations and Stein's method to study the total spin and its typical behavior, specifically obtaining non-normal limit theorems at the critical temperatures and central limit theorems away from criticality. Some of the important special cases of these models are the XY ($N=2$) model of …
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The use of spin-pure and non-orthogonal Hilbert spaces in Full Configuration Interaction Quantum Monte-Carlo
… are ˆ eigenfunctions of the square of the total spin operator, S 2 , as well as the Hamiltonian and the projected spin, imposing spin-purity as an additional ‘symmetry’ is a natural extension. In this thesis, the use of various spin-pure spaces is compared to the previously used …
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An Experimental Investigation of Churning Power Losses of a Gearbox
In this study, load-independent (spin) power losses of a gearbox operating under dip-lubrication conditions are investigated experimentally. A family of final drive helical gear pairs from an automotive transmission is considered as the example for this investigation. A dedicated gearbox is …
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Mössbauer studies of putidaredoxin
… electrons on the two iron atoms are coupled to a total spin of zero. The reduced state contains one additional electron which is shared between the two iron atoms and produces an internal field in excess of 200 KG at each iron nucleus. To share an electron, the two iron atoms must be close …
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The proton's longitudinal spin structure studied through the weak interaction in pp collisions
… years there has been limited knowledge of the spin structure of the proton. The degree to which the antiquarks and gluons of radiative origin inside the proton contribute to the total spin is particularly not well confined. The PHENIX experiment at RHIC has made measurements that have, and …
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Dispersive Readout and Spin-State Spectroscopy of Industrially-Fabricated Silicon Quantum Dots
… focuses on reliable and scalable readout of spin qubits in gate-defined silicon complementary metal-oxide-semiconductor quantum dots. In particular, this thesis studies the spin states and Pauli spin blockade (PSB) physics of silicon quantum dots using scalable gate-based dispersive sensing …
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The radiance of the gluon spin : constraining the proton spin structure with the direct photon double helicity asymmetry
… significant contributions to the proton spin from elsewhere. The total spin of the gluon field confining the quarks is one possibility, but a contribution only weakly constrained by the electromagnetic probes of DIS. An observable far more sensitive to contributions from the gluon field …
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Exact and variational investigations of Hubbard rings
… limit. We obtain our result by exploiting the spin symmetry of the Hubbard Hamiltonian. Our energy is lower than that obtained by previous published results, and we are able to explain why our results differ. Our method also gives information about the magnetic ordering of the ground state as a …
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Measurement of Single and Double Spin Asymmetries in Semi-Inclusive Deep-Inelastic Scattering on Proton and Deuteron
… and beam-target double (<em> ALL</em>) spin azimuthal asymmetries in semi-inclusive deep-inelastic scattering (SIDIS) off the proton and the deuteron extracted from the data are presented. The results of the azimuthal asymmetries for the proton are presented as a function of two …
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Design and construction of an ultrasonic probe for use in a Cryo-Magnet NMR Spectrometer
… averaging of several components of the total spin Hamiltonian caused by restrictions placed on molecular motion within a solid. At present Magic Angle Spinning (MAS) NMR is the classical solid state technique used to reduce line broadening, but: this has associated problems, not least of …
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Design of a positron beam for the study of the entanglement in three gamma-rays generated by positronium annihilation
… production. Needless to say, the products have total mass less than the one corresponding to initial energy from Einstein’s equation. For this reason, from an annihilation event, a cascade of particle-antiparticle pairs is generated, the mass of the created particle and antiparticle is less than …